I started using this a month ago. Got this on a whim at Costco as my skin have been really dull since giving birth (and severe hair loss too). It seems like my body reacts well with this WN supplement because I saw results on my 2 week mark. I took it religiously, 2 caps twice a day with meals. I take it together with vitamin C and I swear, my skin is naturally glowing, and some of my family noticed it too. Just some moisturizer and sunscreen and I’m good!!